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hw/arm/virt: Add a control for the the highmem redistributors 

Just like we can control the enablement of the highmem PCIe region
using highmem_ecam, let's add a control for the highmem GICv3
redistributor region.

Similarily to highmem_ecam, these redistributors are disabled when
highmem is off.

Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Message-id: 20220114140741.1358263-3-maz@kernel.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Marc Zyngier 2022-01-14 14:07:37 +00:00 committed by Peter Maydell
parent c8f008c40f
commit a63618b147
3 changed files with 7 additions and 1 deletions
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2
hw/arm/virt-acpi-build.c
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@ -947,6 +947,8 @@ void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables)
acpi_add_table(table_offsets, tables_blob);
build_fadt_rev5(tables_blob, tables->linker, vms, dsdt);
vms->highmem_redists &= vms->highmem;
acpi_add_table(table_offsets, tables_blob);
build_madt(tables_blob, tables->linker, vms);

2
hw/arm/virt.c
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@ -2113,6 +2113,7 @@ static void machvirt_init(MachineState *machine)
virt_flash_fdt(vms, sysmem, secure_sysmem ?: sysmem);
vms->highmem_mmio &= vms->highmem;
vms->highmem_redists &= vms->highmem;
create_gic(vms, sysmem);
@ -2902,6 +2903,7 @@ static void virt_instance_init(Object *obj)
vms->highmem_ecam = !vmc->no_highmem_ecam;
vms->highmem_mmio = true;
vms->highmem_redists = true;
if (vmc->no_its) {
vms->its = false;

4
include/hw/arm/virt.h
View File

@ -144,6 +144,7 @@ struct VirtMachineState {
bool highmem;
bool highmem_ecam;
bool highmem_mmio;
bool highmem_redists;
bool its;
bool tcg_its;
bool virt;
@ -191,7 +192,8 @@ static inline int virt_gicv3_redist_region_count(VirtMachineState *vms)
assert(vms->gic_version == VIRT_GIC_VERSION_3);
return MACHINE(vms)->smp.cpus > redist0_capacity ? 2 : 1;
return (MACHINE(vms)->smp.cpus > redist0_capacity &&
vms->highmem_redists) ? 2 : 1;
}
#endif /* QEMU_ARM_VIRT_H */